Shaft-adjusting tool



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H. J. NIELSEN SHAFT ADJUSTING TOOL Filed Sept. 27, 1924 mm R V5. 0 Mm NI A /w m "M W Patented Get. 12, 1926.

UNITED STATES HANS a. NIELSEN, SAN rmnxcrsco, onmnoanra.

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Application filed September 27, 1924. Serial Nanasa's. A

My invention is an improved shafting adjusting tool, by means of whichdisalignment of shafting may be discovered. My tool consists of a lightbox having a small orifice therein, through which light is emitted; afixed plate having a small sight opening therein, and a second plate,the

sight opening of which is vertically adjust-' able to indicate theamount of m'al-alignment in the shaft.

The object of my invention is to provide a tool which may be easilyapplied to a shaft, and will accurately determine the amount ofmal-alignment in said shaft.

In the annexed drawing in which my invention is illustrated:

Figure 1 is a front elevation of the light box. I

Figure 2 is an end elevation of the same.

Figure 3 is a side elevation of the adjustable sighting plate.

Figure is a rear elevation of the same with the cover plate removed toshow the interior construction. v

Figure 5 is a side elevation of the sighti s P e Figure 6 is an endelevation of the same.

Figure 7 is a diagrammatic View of my tool in position on a shaft.

Referring more particularly to the drawing, a light box 1 has a cover 2secured to the front face thereof, by means of which the interior may bereached, or to replace a light 3 placed within said box. A suitableswitch plug 1 in the end of said box provides means whereby theelectrical current may be supplied to the lamp 3 through a suitable plug5. The rear face of the box 1 is provided with a small sight opening 6in the form of a slot, and said opening being preferably formed by apair of plates 77 spaced apart the thickness of the opening 6, saidplates being mounted within the box 1 and over a large opening 8 in therear face thereof. An arcuate stand 9 is formed or secured to the bottomof the box 1 and is adapted to rest upon the shaft, or upon a couplingin the shaft.

A vertical slot 10 is also formed in the rear face of the box 1. bymeans of a pair of plates 11-11 placed in juxtaposition over the opening12 in said box. A fixed sight member 13 see Figs. 5 and 6) has ahorizontal slot 1 1 formed therein, said slot being formed by a pair ofplates 15 115 placed over an opening 16 through said plate. A verticalslot 1'Zis formed at one side of the member 13 by a pair of plates 18-48 positioned over an opening 19 through said member. A cover 20 issecured to said member to cover the plates 15 and 18. The member 13 ismounted upon an arcuate base 21 by means of which it is mounted upon theshaft, or a coupling of said shaft.

An adjustable sighting member 22 (see Figs. 8 and 4) has a fixedvertical slot 23 at one side thereof formed by a pair of plates 2424positioned over an opening 25 in said member. This horizontal slot 26through said member may be adjusted vertically; this slot is formed by apair of plates 27--27 secured to a second plate 28 and over an opening29 in said second plate. An opening 30 is also formed through the member22 to permit the passage of light therethrough as'will be furtherdescribed.

The plate 28 is accurately guided in a vertical plane within the member22 by the sides thereof engaging guide shoulders 31 l and within themember 22, A bolt 33 has the head thereof secured to the upper edge ofthe plate 28 and extends upwardly through a knurled nut 34;, which nutis positioned within a cage 35 formed on the top of the member 22. Thusit will be seen that by threading the nut 3 1 upon the bolt 33 the plate28 may be raised or lowered and the opening 26 therein will consequentlybe raised or lowered for a purpose to be further described. An opening36 is formed in the rear face of the member 22 through which plate 28may be seen; a suitable mark on said plate registers with a scale formedon the edge of said opening,

thereby determining the amount of movement of said plate. An arcuaterest 37 is formed or secured to the bottom of the member 22, which isadapted to rest upon the shaft, or upon a coupling of said shaft.

In operation, the box 1 is placed at one end of a shaft and the light isturned on.

The fixed sighting member 13 is positioned at the other end of thisshaft and the adjustable member 22 is positioned between the box 1 andthe member 13. By sighting through the opening 17 and adjusting themember 22 until light is seen through the opening 23 from the opening 10in the box 1 my tool is accurately aligned in a vertical plane.

The next operation is to determine thn disalignment of the shaft in ahorizontal 351mm which is determined by sighting through the opening 1%and attempting to locate the light Which is emitted through the opening6. This cannot be done until the opening 26 in the member 22 is in exactalignment with the openings 6 and 1 therefore, the opening 26 isadjusted up or down by turning the nut 34: upon the bolt 33 until lightis seen through the opening 1st. 3y reading upon the scale adjacent theopening 36 the amount of disalignmcnt is determined, and the shaftbearing may be adjusted for this amount.

Having described my invention, I c-la-im:-

1. An aligning tool comprising a box having an opening therein, a fixedsighting member having an opening therein, an adjustable sighting memberhaving an opening therein in alignment with the opening in said fixedsighting member, a movable plate in said adjustable sighting memberhaving an opening therein, in alignment with the openings in said fixedsighting member, and aid adjustable sighting members, all of saidopenings being elongated and extending in a horizontal direction, andmeans to move said plate within said adjustable sighting member.

2. An aligning tool comprising a light box having vertical andhorizontal openings therein, a light in said light box, a fined sightingmember having vertical and horizontal openings extending therethrough,an adjustable sighting member having a fixed vertical opening and asecond opening extending therethrough, a vertically movable platepositioned over said second opening,

said plate being provided with a hole, and a pair of plates positionedover said hole to form a horizontal slot.

3. An aligning tool comprising a light box having vertical andhorizontal openings therein, a light in said light box, a fixed sightingmember having vertical and horizontal openings extending therethrough,an adj ustable sighting member having a fixed vertical opening and asecond opening extending therethrough, a vertically movable platepositioned over said second opening, said plate being provided with ahole, a pair o1 plates positioned over said hole to form a horizontalslot, and means to adjust said plate to vary the width of said slot.

4. An aligning tool comprising a light box having vertical andhorizontal openings therein, a light in said light box, a fixed sightingmember having vertical and horizontal openings extending therethrough,an adjustable sighting member having a fixed vertical opening and asecond opening extending therethrough, a vertically movable platepositioned over said second opening, said plate being provided with ahole in alignment with the said second opening, a pair of platespositioned over said hole to form a slot, said adjustable member beingprovided with an additional opening through which said plate is visible,and a scale adjacent said additional opening to determine the amount ofmovement of said plate.

In testimony whereof I aiiiX my signature.

HANS J. NIELSEN.

